10" x 34" or 34" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 36.5"] 2-Way Performance – High diffusion induction

Performance – High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

this model allows for mounting without removing the thermostat

Actual Filter Size – 7 3/4"w x 33 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 30" or 30" x 8" duct opening (measured at the opening)

10" x 34" or 34" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 36.5"] 2-Way Performance – High diffusion induction+ Product Details Perfect Fit & Easy Sizing Designed for a 10" x 34" or 34" x 10" duct opening (measured at the opening), with actual outer dimensions of 12. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 9. 75" x 33. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum